Our pulleys are precision made from domestic USA 6061-T6 Billet Aluminum. We have thousands of proven hours in testing, race use and street miles accumulated to tell us these pulleys work great and give you the edge.
Each are precision zero-balanced and inspected for zero-runout for the best performance and to have no adverse affects on reliability, noise, or vibration.
Many competitors have tried but no one duplicates the quality of our in house CNC'ed components as all our products are designed, created and manufactured in house by BMW enthusiasts.

Standard Lightweight Set:
Offers reduce losses by creating a light weight and slightly under driven pulley set that helps unleash horsepower to the wheels on your BMW. Perfect for a driver with factory audio system, or a track car on a budget.

Ultra Light Set:
In the development of our S54 race engine program, we created our Ultra-Light pulley set; our most optimized design yet.
By machining to drop maximum weight, this set adds a safe 11 horsepower and 9 lb/ft of torque (measured to the wheels). This is also 100% suitable for street cars with a factory audio system or less.

2-Pulley Lightweight Set:
Just like our Lightweight sets of 3 pulleys, however we don't include an underdriven alternator pulley for customers who upgraded audio or in car entertainment gear and want high and steady voltage output from their alternator. Recommended for show cars and cars with several hundred watt plus aftermarket audio systems.

2-Pulley Ultra Light Set:
A very popular choice; just like our Ultra Light sets of 3 pulleys, however we don't include an underdriven alternator pulley for customers who upgraded audio or in car entertainment gear and want high and steady voltage output from their alternator. You will still get gains enough to pull car lengths vs. a standard car. The best kit for fast cars with high powered aftermarket audio systems.